Type wheel



Jan. 30, 1 923.

0O. 3 3 Mm 8 ir 1 0 w h .1 4 8 3 F 9 k 4 -fim-W F NEZ .IHZ W W F H InvenTor- Fred A. PuTnum 1 bymwkm Anya.

Patented Jan. 30; 1923.

tiNi t rnnn A. PUTN AM, or KEENE, NEW HAMPSHIRE, assrenon To MARKEM MACHINE v comranv, or BOSTON, MASSACHUSETTS, aconronnrronor assnonnsnrrs;

7 TYPE wnnnnf To (ZZZ whom 2'17 may concern: I Be it known that I, FRED A. PUTNAM, a citizen of the United States, and resident of Keene, county of Cheshire, State of New ters on the drawing representing like parts. 10

This invention relates'to type wheels for use in those printing or marking machines that have a pluralityof independentlyach justable type'wheels each bearing a plurality of type characters, an example of such marking machine being found in United States Patents No. 15181365 and No. 1,131,959, both dated March 16, 1915. p

tion is to provide a type wheel of this character which'is constructed so that the type are separable from the'bo dy of the wheel. One advantage of this construction. is that if it is desired for any reason to change one or more of the type characters of anytype wheel, such change can be effected by simply removing the type characters which are not desired and substituting therefor othertype characters. In some type wheels: the type characters are cast integral with thexwheel and, of course, where this construction is employed the only way to eli'ect a change in one or more of the type characters on the wheel is to provide anew type wheel.

Another advantage which is derived from this construction is that the type characters can be made from a relatively hard material which will withstand the wear to which they are subjected, while the body of the type wheel can be made of'a material which while suitable for the body of the wheel mi ht not be suitable for the type characters.

6ther objects of the invention are to'improve type wheels all as will be more fully hereinafter set forth.

In order to give an understanding of the invention 1 have illustrated in the drawings a selected embodiment thereof which will now be described after which the novel fea tures will be pointed out in the appended claims.

Fig. 1 is a side view of a typewheel embodylng the invention.

Fig. 2 is a sectional view of one of the type-carrying arms of the type wheel showmg the type block in position thereon.

Application filed Apri122, iz t ei No. 556,0 5.

" Fig. 3 is a section on the line 3-43, Fig. 2.

I Fig. dis a perspective View of one ofthe type blocks removed. I i Fig. 5 is a perspective View of thef'endof one ofthe type-carrying arms. 7 M

Fig. 6' is an under side perspective view of the type block. The type wheelf'herein shown comprises a. body portion '1 which may have any suit-' able shape .dependlngon the construction of the markingmachine withwhich it is used.

This body portion 1 is provided with' a plu rality' of radially-extending arms 2 each} adaptedto support a type character. The type characters areformed on type blocks 3 which aresecured to the ends of the arms I Qfla'nd the construction is preferably such One of'the objects of my present 1nven-' that thetype blocks 3 can be removed from the arms in 7 order to permit them to be replaced by newtype blocks: Each type bloclrhas on its outer face a type character 4. These "type blocks may be made in 7 any wa without departing from the "invention.

They might be made'as die castingsor the type-characters l-fmay be engraved or cut thereon by any suitable means. In any event the material of which'the' type blocks 3 are made will preferably be hard and strong so thatthey'will stand up under hard and continuous usage.

. In order to anchor the type blocks 3 ito thearms 2 I propose to form in the end of eacharin 2'crossing groovesfand'to provide the typeblock with corresponding ribs and tongues to fit the grooves. By having the. tongues and grooves crossing each other or extending in different directions they serve to anchor the type block in place and prevent it from lateral movement in any dii rection.

in the construction herein each arm 2 is provided with a groove or slot 5 extending transversely there across and-is also provided with another thereacross in another direction, preferably in a direction of the'plane of the type wheel. One of-these grooves is shown'as deeper than the other although this is not essential. In this construction the groove or slot 5 is deeper than the groove 6. The type block 3 is formed with an inwardly-extending tongue 8 of a size to fit groove or slot 6 extending the slot 5. and is also provided with a rib 9 j of a shape and size to fit the groove 6. The tongue and the rib intersect each other and because the tongue 8 is larger than the rib 9, said rib will appear as two separated sections situated on opposite vsides of the ton'gne%8-.

Each type block is retained in place by a locking pin 10 which extends transversely through the arm 2, the wall of the slot '5 and" one face of the tongueh8 each being provided.

with a groove'll to receive the pin; Whe'n the parts are assembled the two grooves 11 form an opening extending transversely throng h the arm into which the pin 10 may be driven,

In assemblingthe typeblock with the type wheel, said block'will be inserted in its place wit'hfthe tongue '8 fitting into the slot and the ribsections 9 fitting into the groove 6, after which the locking pin will be driven into the aligned grooves 11. The rib sections 9 hold each type block from movement transversely of the arm 2 and the tongue 8 holds the block from movement in a direction tangentially of the wheel.

With this construction it is possible to make the body of the type wheel of arel atively *cheap metal which, while having all the characteristics necessary for the body of the wheel, does not have the proper char,-

' acteri'stics for the type characters, and to make the type blocks of another kind of material which is better suited for making of type characters. In a type wheel having this construction the type characters can be made of a material which will withstand the wear to which, they are subjected while the body of the type wheel can, be made of a less expensive material. In this way a type wheel of the highest quality, so far as service is concerned, can be produced at relatively small cost. 7 v c The type blocks can be made as die castings or may be made of steel which is engraved or out to form the type characters thereon or may be made in any other way. The type blocks are all interchangeable so that if it is desirable at any time to change the nrder of the type icharatters or to pro"- vide 'difier'e'n't type "characters, the type blocks can be readily removed and new ones "inserted which will have the proper orde or the desired type characters.

While l have 'illifi'strated herein a selected embodiment of the invention I do not wish to be limited to the constructional teatii res shown.

I claim. 1. A type wheel having its end with two crossing grooves, and type blocks carried by said arms and each having tongues and ribsfit't'ing said grooves,

2. In a type wheel, the combinationwith a plurality of radlal type Carrying firing Bach pr vided at" a body portion having faplurality of radial arms each'proyided'rwith 'a slot extending across the end thereof in one direction an a groove extending across the end thereof i in another direction, oi -type blocks carried by sa d arms, each, block; having a tongue each having a' tongue fitting the slot andfa when the block is in place, and'a locking in said aligned grooves.

In testimony whereof, I have signed name to this specification,

FRED A. Permit. 

